Seiko Cal. 6138 - 623

The Seiko 6138-623 represents an important milestone in Seiko's 1984 lineup. Powered by the 6138 caliber with 36j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-8e94d97eb873]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1984

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